Hey
I don't think there's really a formula for finding love, but I figure there's one or two for optimizing your chances of finding love.
You said you get out when your only friend is off work... does that mean you don't really know anyone?

I always find that with love you need to be able to talk to people, to be in situations where you can have the occasional conversation with a stranger. That's the best bet in my experience.

But there are some other concerns too. Like you should have some more close friends in your life so you can have different experiences with different people - Things that would make you feel good about you.
I think you'd feel a lot better about yourself if you expanded your social life first. But that's hard with low self-esteem.

Perhaps you should work on your self-esteem then build new and good things within your life.
Love is hard to find, and even harder to keep, but the chances of finding it when you don't go out very much or meet many people isn't so good.

Don't focus too much on the love part anyway. Make yourself feel better about your looks and your life. You have the power to change both if you think that is the solution.

Analyze yourself, take a good look, and work on what you want to be different.
Not finding love at this stage in your life isn't shocking or strange. A lot of people go almost their whole lifetime without finding what they would consider love.
You're still young. Finding love and making a life you're happier with are things that are entirely possible.

I;d love if you kept posting about your situation, maybe tell us about what you're getting up to, if you're making changes or feeling better.